. >> around 100 people are suffering from hiv and hepatitis c testing around china's ministry of health. demonstrators are demanding compensation over tainted blood transfusions in the 1990's. it affected -- it infected thousands. mexico's president says he will be working with the teachers union to improve the education system in the country. he is also promising not to interfere in the investigation against the union boss, who has been arrested and charged with embezzling $150 million from the union. >> the process that will follow is strictly legal. spotting to evidence of probable illicit movement and the concealing of resources from the national union of education workers. the resources of unions are of members, not of the directors. they should be used to the benefits of their workers. the action by the attorney general of the republic is in defense of teachers and their assets. >> she was seen as a hurdle in the president's have to education reform. as john reports, there were concerns over the timing of her arrest. >> the most powerful women in mexico has gone from patron of pre